Internal-combustion engines – Engine speed regulator – Responsive to deceleration mode
Patent
1983-01-10
1984-03-27
Cuchlinski, Jr., William A.
Internal-combustion engines
Engine speed regulator
Responsive to deceleration mode
123339, 123585, F02M 2306
Patent
active
044387440
ABSTRACT:
An idling rpm feedback control method for controlling the quantity of supplementary air being supplied to an internal combustion engine, in a feedback manner responsive to the difference between actual engine rpm and desired idling rpm at engine idle. When the engine is decelerated with the throttle valve fully closed and before the feedback control is started, the supplementary air quantity is controlled in decelerating mode in a predetermined manner while the engine speed drops from predetermined rpm larger than an upper limit of the desired idling rpm range to the same upper limit, and in feedback mode after the engine speed has dropped below the above upper limit, respectively. The feedback control is continued even when the engine speed temporarily rises above the upper limit. In the decelerating mode, the supplementary air quantity is gradually increased with a decrease in the engine rpm.
REFERENCES:
patent: 4237838 (1980-12-01), Kinugawa et al.
patent: 4306527 (1981-12-01), Kinugawa et al.
patent: 4386591 (1983-06-01), Nagase et al.
Cuchlinski Jr. William A.
Honda Motor Co. Ltd.
Lessler Arthur L.
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